Silica Deposition in Superheated Geothermal Systems
- Key words
- deposition; OpenFoam; silica; steam
- Conference
- Stanford Geothermal Workshop
- Year
- 2018
- Session
- Modeling
- Language
- English
- Paper number
- Chauhan
Full text
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Abstract
Superheated geothermal systems represent two phase system consisting of precipitated silica in dispersed phase with the superheated steam. The work presents computational approach to predict silica transport and deposition in superheated geothermal systems. Advection diffusion model was implemented using OpenFoam. The model includes effect of Brownian diffusion, turbulent diffusion, turbophoresis, Saffman lift force, drag force and thermophoresis on silica particle motion. The OpenFoam solver developed was validated for gas particle flows showing good agreement. Deposition characteristics of silica particles in superheated steam flow were studied.
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